:root {
	--ink: #202735;
	--muted: #697386;
	--paper: #fffdf8;
	--accent: #e94d4d;
	--line: #e7e1d8;
}

* {
	box-sizing: border-box;
}

body {
	min-height: 100vh;
	margin: 0;
	background: var(--paper);
	color: var(--ink);
	font-family: "Noto Sans SC", sans-serif;
}

header,
footer,
main {
	width: min(960px, calc(100% - 40px));
	margin: 0 auto;
}

header {
	display: flex;
	align-items: center;
	height: 88px;
	border-bottom: 1px solid var(--line);
}

.brand {
	display: inline-flex;
	align-items: center;
	gap: 12px;
	color: inherit;
	font-size: 15px;
	font-weight: 700;
	text-decoration: none;
}

.brand img {
	width: 42px;
	height: 42px;
	border-radius: 50%;
	object-fit: cover;
}

main {
	padding: 64px 0;
}

.event-card {
	display: block;
}

.label {
	margin: 0 0 24px;
	color: var(--accent);
	font-size: 12px;
	font-weight: 700;
	letter-spacing: 0.14em;
	text-transform: uppercase;
}

.description {
	font-size: 18px;
	line-height: 1.8;
	white-space: pre-wrap;
}

.description::first-line {
	font-size: 30px;
	font-weight: 700;
	line-height: 1.4;
}

.error {
	color: var(--accent);
}

.classes-link {
	display: inline-flex;
	gap: 18px;
	margin-top: 34px;
	padding-bottom: 5px;
	border-bottom: 2px solid var(--ink);
	color: inherit;
	font-weight: 700;
	text-decoration: none;
}

.qr-grid {
	display: grid;
	grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
	gap: 24px;
	margin-top: 48px;
}

.qr-panel {
	padding: 24px;
	border: 1px solid var(--line);
	border-radius: 12px;
	background: #fff;
	text-align: center;
}

.qr-title {
	margin: 0 0 18px;
	font-size: 17px;
	font-weight: 700;
}

.qr-panel a {
	display: block;
}

.qr-panel img {
	display: block;
	width: min(100%, 240px);
	height: auto;
	margin: 0 auto;
	aspect-ratio: 1;
	object-fit: contain;
}

.qr-help {
	margin: 16px 0 0;
	color: var(--muted);
	font-size: 13px;
}

footer {
	padding: 28px 0;
	border-top: 1px solid var(--line);
	color: var(--muted);
	font-size: 12px;
}

footer p {
	margin: 0;
}

@media (max-width: 720px) {
	main {
		padding: 42px 0;
	}

	.description {
		font-size: 16px;
	}

	.description::first-line {
		font-size: 24px;
	}

	.qr-grid {
		grid-template-columns: 1fr;
		margin-top: 36px;
	}
}